CRANIUM
The front part of the skull above the eyes , has a strong
plate of bone, because we fall down and are likely to break it. Three bones ,
joined together form the upper part. In a new born baby, these bones are still
not fully merged and we can feel a softness there.
From ear to ear, is an opening, through which we can insert
a rod, through the dead skull. The central
part is called the middle ear or coclea
. Here is the balancing mechanism. If
we continuously turn round and stop, we may lose balance and fall down.
After drinking alcohol, this part may be affected. That is why drunkard has to walk on four legs.
On either side of the middle ear, is a membrane which
vibrate and we hear the sound waves. If
this ‘tympanam’ is broken we cannot hear. To protect the membrane, there is a
wax which comes out slowly. This must be removed by cotton buds. It is not
advisable to pour hot oil , when the ear aches. Hydrogen peroxide solution may
be dropped.
THE CENTRAL NERVOUS SYSTEM
The brain is connected to each cell, by neurons, long nerve
cells joined together, end ot end similar to the electric wires. Leprosy germs
eat away these cells and the patients lose ability to feel the touch. This is
how they lose the tips of fingers. The
neurons cover the whole body, like the blood veins.
The brain cells die in old age , some at a time, resulting in memory loss, hand shaking etc.
Brain is like the Central Secretariat. In case of damage, the ‘sympathetic
nervous system’ will carry on the day to day functions of the brain, to maintain
the organs. The person will be in coma.
EAR
The head is located above the body, connected by the neck.
The neck may be very short or very long. Similarly, there is considerable
variation in the size of the head, features of the face and size and
attractiveness of the eyes. But these are immaterial, when we study the working
of the body as a whole.
The head is built on a strong frame of bone, called the
cranium. It is not a single piece. Very young baby has a gap in the cranium,
which gets filled, as the three bones constituting the skull, grow and fill the
hole. The bone above our eyes is exceptionally strong, because , we all fall
down often. Even if the face bleeds, nothing will normally break the bone. It
is an example of His ability to see things in All organs of the body may get
damaged, but one can survive, if the brain is intact. advance and design the
cranium, to protect the brain, which is the most important member of the body
as a whole !
No comments:
Post a Comment